monday against president trump. in that lawsuit, it will argue that mr. trump is violating the constitution by accepting payments from foreign governments through his business. >> the president's lawyer denies that allegation, saying that he has taken the necessary measures to avoid any conflicts of interest. the executive director of group, known as crew, says in a statement -- and i'm quoting here -- it was our hope that president trump would take the necessary steps to avoid violating the constitution before he took office. he did not. his constitutional violations are immediate and serious, end quote. >> some experts say as a matter of ethics, they want to see president trump's tax returns to help them determine if he is avoiding potential conflicts of ingt. during the campaign he promised to release them after an irs audit was completed. >> but now his top adviser, kellyanne conway, is pushing this aside a bit more.